One of my spadefish has an ominous blister behind his mouth. What is it, what do I do? One of my other fish (blueback shiner-bait fish) had a blister on his mouth too, but I took him back to his native waters. I kinda like the spadefish so wanted to treat him if not too complicated.
Thx
Thx
. I love the little guy. All 4 spadefish follow me around the room begging for food when I'm near the tank. Bah, this is the hard part of keeping animals. 
